{"id":58719,"date":"2024-01-18T07:46:18","date_gmt":"2024-01-18T11:46:18","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=58719"},"modified":"2024-01-18T07:46:18","modified_gmt":"2024-01-18T11:46:18","slug":"khp-an-over-the-air-cryptographic-challenge-on-january-20-2024","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2024\/01\/khp-an-over-the-air-cryptographic-challenge-on-january-20-2024\/","title":{"rendered":"KHP: An over-the-air cryptographic challenge on January 20, 2024"},"content":{"rendered":"

\"\"<\/a>Many thanks to SWLing Post<\/em> contributor, Paul (KW1L), who writes:<\/strong><\/p>\n

The Maritime Radio Historical Society, in cooperation with our good friends at the Cipher History Museum, present a unique, over-the-air cryptographic challenge.<\/p>\n

https:\/\/www.radiomarine.org\/mrhs-events<\/a><\/p>\n

On January 20 2024, KPH will transmit a coded message consisting of 5-digit groups. The message will be encrypted using typical Cold War numbers station cryptographic procedures. All KPH listeners are invited to try their hand at receiving and decrypting the message. Certificates will be awarded to those who successful decode the message. Additionally, a special certificate will be awarded to the first person to decode it.<\/p>\n

Click here for details.<\/a><\/p>\n

Thank you, Paul!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to SWLing Post contributor, Paul (KW1L), who writes: The Maritime Radio Historical Society, in cooperation with our good friends at the Cipher History Museum, present a unique, over-the-air cryptographic challenge. https:\/\/www.radiomarine.org\/mrhs-events On January 20 2024, KPH will transmit a coded message consisting of 5-digit groups. The message will be encrypted using typical Cold […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3,43],"tags":[10425,7279,3962,10424],"class_list":["post-58719","post","type-post","status-publish","format-standard","hentry","category-news","category-shortwave-radio","tag-cipher-history-museum","tag-kph","tag-maritime-radio-historical-society-of-america","tag-paul-kw1l"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-fh5","jetpack-related-posts":[{"id":53513,"url":"https:\/\/swling.com\/blog\/2022\/07\/decode-the-enigma-crypto-transmission-from-kph-on-saturday-july-23-2022\/","url_meta":{"origin":58719,"position":0},"title":"Decode the Enigma: Crypto Transmission from KPH on Saturday, July 23, 2022","author":"Thomas","date":"July 21, 2022","format":false,"excerpt":"The Maritime Radio Historical Society is hosting a brilliant on-the-air event via KPH. I've pasted full details below, copies directly from the Maritime Radio Historical Society announcement: ATTENTION ALL AGENTS! Crypto Transmission from KPH! Background The MHRS in cooperation with our good friends at the Cipher History Museum will send\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/03\/Enigma-Machine.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/03\/Enigma-Machine.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/03\/Enigma-Machine.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/03\/Enigma-Machine.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":41692,"url":"https:\/\/swling.com\/blog\/2020\/01\/kph-article-on-techcrunch-and-bay-area-backroads\/","url_meta":{"origin":58719,"position":1},"title":"KPH Article on TechCrunch and Bay Area Backroads","author":"Thomas","date":"January 20, 2020","format":false,"excerpt":"Many thanks to SWLing Post contributor, Dan Van Hoy, who writes: \"The Last Radio Station,\" an article about maritime radio station, KPH, is up on TechCrunch ( https:\/\/techcrunch.com\/2020\/01\/18\/the-last-radio-station\/ ). https:\/\/youtu.be\/zI9-SRqJrgE KPH is silent on maritime frequencies, but through the hard work of volunteers continues operation 24\/7 with a 3-30MHz KiwiSDR\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/09\/1024px-Cypress_Tree_Avenue_at_KPH_Point_Reyes-1024x635.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/09\/1024px-Cypress_Tree_Avenue_at_KPH_Point_Reyes-1024x635.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/09\/1024px-Cypress_Tree_Avenue_at_KPH_Point_Reyes-1024x635.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":63695,"url":"https:\/\/swling.com\/blog\/2025\/08\/kph-crypto-transmission-on-august-30-2025-at-2000-utc\/","url_meta":{"origin":58719,"position":2},"title":"KPH Crypto Transmission on August 30, 2025 at 20:00 UTC","author":"Thomas","date":"August 19, 2025","format":false,"excerpt":"Many thanks to SWLing Post contributor Paul Jamet, who notes that the Maritime Radio Historical Society is hosting another Crypto Transmission from KPH on Saturday, August 30, 2025 at 20:00 UTC. Click here for full details about the event and how you can participate on the Maritime Radio Historical Society\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/03\/Enigma-Machine.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/03\/Enigma-Machine.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/03\/Enigma-Machine.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/03\/Enigma-Machine.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":26961,"url":"https:\/\/swling.com\/blog\/2017\/07\/guest-post-night-of-nights-july-12-2017\/","url_meta":{"origin":58719,"position":3},"title":"Guest Post: \u201cNight of Nights\u201d July 12, 2017","author":"Thomas","date":"July 9, 2017","format":false,"excerpt":"Many thanks to SWLing Post contributor, Brian Smith (W9IND), who shares the following guest post: \u201cNight of Nights\u201d 2017 by Brian D. Smith, W9IND \u201cNight of Nights XVIII\u201d \u2013 radio\u2019s answer to \u201cNight of the Living Dead\u201d \u2013 will again unfold on July 12 (July 13 UTC) with the return\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/07\/Night-Of-Nights.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/07\/Night-Of-Nights.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/07\/Night-Of-Nights.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/07\/Night-Of-Nights.jpg?resize=700%2C400 2x"},"classes":[]},{"id":38460,"url":"https:\/\/swling.com\/blog\/2019\/07\/night-of-nights-cw-event-returns-tonight\/","url_meta":{"origin":58719,"position":4},"title":"\u201cNight of Nights\u201d CW Event Returns Tonight!","author":"Thomas","date":"July 12, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor, Brian Smith (W9IND), who shares the following announcement: \u201cNight of Nights\u201d CW Event Returns Friday (U.S. Time)\u00a0 \u201cIt was 20 years ago today,\u201d say members of the Maritime Radio Historical Society, but they\u2019re not covering a famous Beatles song. They\u2019ll certainly be on key,\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Maritime-Historical-Night-of-Nights-e1562898985768.png?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Maritime-Historical-Night-of-Nights-e1562898985768.png?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/07\/Maritime-Historical-Night-of-Nights-e1562898985768.png?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":33959,"url":"https:\/\/swling.com\/blog\/2018\/09\/atlas-obscura-features-kph-maritime-radio-receiving-station\/","url_meta":{"origin":58719,"position":5},"title":"Atlas Obscura features KPH Maritime Radio Receiving Station","author":"Thomas","date":"September 4, 2018","format":false,"excerpt":"(Source: Atlas Obscura via Eric McFadden) One of the most stunning sights of the Bay Area is the historic KPH Radio Station, also known as Marine Coast Station KPH. To reach the station, you must first pass through a clerestory tunnel of cypress trees near the Point Reyes National Seashore.[...]\u2026","rel":"","context":"In "News"","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/09\/1024px-Cypress_Tree_Avenue_at_KPH_Point_Reyes-1024x635.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/09\/1024px-Cypress_Tree_Avenue_at_KPH_Point_Reyes-1024x635.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2018\/09\/1024px-Cypress_Tree_Avenue_at_KPH_Point_Reyes-1024x635.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/58719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=58719"}],"version-history":[{"count":1,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/58719\/revisions"}],"predecessor-version":[{"id":58720,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/58719\/revisions\/58720"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=58719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=58719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=58719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}